Electric vehicle ladder entering supervision equipment

Abstract

According to the electric vehicle elevator entering supervision equipment, the surface of the first side wall, the surface of the second side wall, the surface of the third side wall and the surface of the fourth side wall of an elevator car are smooth, and mirror reflection of laser can be achieved. The first sensor is fixedly connected to the second side wall, the second side wall right faces the elevator door of the fourth side wall, when the electric vehicle enters the elevator, the electric vehicle is different from a human body and can hinder receiving of laser emitted by the first sensor, and the first sensor can give a signal level to the level transponder according to different laws of receiving the laser; therefore, the action level that the level transponder responds to the buzzing of the buzzer is realized. The second sensor can give a signal level to the level transponder according to different laws of receiving the laser of the second sensor. What is worth mentioning is that the door lock adjusts opening and closing of the elevator door, and when the door lock obtains action level, both the first sensor and the second sensor can enter a working state.

Description

Technical Field

[0001] The present application relates to the technical field of elevator equipment, and in particular to a device for supervising electric vehicles entering elevators. Background Art

[0002] With the popularity of electric bicycles, the phenomenon of electric bicycles entering elevators is becoming more and more serious. At the same time, since most electric bicycles currently use lithium-based batteries, aging lithium-based batteries are prone to thermal failure. Such aging lithium-based batteries may cause thermal failure, explosion and other fire accidents in a closed elevator. With the intensification of the phenomenon of electric bicycles entering elevators, similar accidents have occurred. Traditional electric vehicle elevator monitoring equipment is mostly based on large models and neural network algorithms to identify the shape of electric vehicles and then issue an early warning. However, this type of method that relies on complex computer algorithms is costly and cannot be accepted by most elevator manufacturers. For this reason, it is necessary to propose an electric vehicle elevator monitoring device to address the defect of the high cost of traditional electric vehicle elevator monitoring equipment. Utility Model Content

[0003] Based on this, it is necessary to propose an electric vehicle elevator supervision device to address the defect that the traditional electric vehicle elevator supervision device is too costly.

[0004] The present application provides an electric vehicle elevator monitoring device, comprising:

[0005] An elevator car, comprising a top wall and a bottom wall, wherein a first side wall, a second side wall, a third side wall and a fourth side wall are fixedly connected in sequence between the top wall and the bottom wall, the first side wall and the third side wall are parallel to each other, the first side wall is perpendicular to the bottom wall, the second side wall and the fourth side wall are parallel to each other, the second side wall is perpendicular to the bottom wall, and the fourth side wall is provided with an elevator door;

[0006] A door lock device, rotatably connected to the elevator door;

[0007] A level transponder, electrically connected to the door lock;

[0008] a first sensor, electrically connected to the level transponder, the first sensor being fixedly connected to the second side wall, the straight-line distance between the first sensor and the bottom wall being within a numerical range of greater than or equal to 60 centimeters and less than or equal to 80 centimeters;

[0009] a second sensor, electrically connected to the level transponder, the second sensor being fixedly connected to the third side wall, the straight-line distance between the second sensor and the bottom wall being within a numerical range of greater than or equal to 60 centimeters and less than or equal to 80 centimeters;

[0010] A buzzer is electrically connected to the level responder.

[0011] Furthermore, the first sensor and the second sensor have the same structure;

[0012] The first sensor includes a first arm and a second arm;

[0013] An extension line of the first arm is perpendicular to the bottom wall;

[0014] The first support arm is fixedly connected to the second side wall;

[0015] The second arm is parallel to the bottom wall;

[0016] The second arm is perpendicular to the first arm;

[0017] The first support arm is fixedly connected to the second support arm.

[0018] Furthermore, the first sensor also includes a lamp bead and a condenser;

[0019] The lamp bead is fixedly connected to the middle part of the second support arm;

[0020] The condenser is fixedly connected to the second support arm;

[0021] The lamp bead is arranged between the condenser and the first supporting arm.

[0022] Furthermore, the condenser is a circular arc piece;

[0023] The inner surface of the condenser is a part of the hollow spherical shell;

[0024] The position of the center of the sphere of the condenser coincides with the position of the lamp bead;

[0025] The inner surface of the condenser is provided with a reflective layer. Furthermore, the first sensor further comprises a third arm and a fourth arm;

[0026] The third arm and the second arm are perpendicular to each other;

[0027] The third support arm is fixedly connected to the second support arm;

[0028] The third arm is disposed between the lamp bead and the first arm;

[0029] The fourth arm is perpendicular to the third arm;

[0030] The middle portion of the fourth arm is rotatably connected to the third arm.

[0031] Furthermore, the first sensor also includes a reflector;

[0032] The reflector is fixedly connected to the fourth arm;

[0033] The reflector is arranged at an end of the fourth arm away from the first arm;

[0034] The reflecting surface of the reflecting mirror and the fourth arm are perpendicular to each other.

[0035] Furthermore, the first sensor further includes a linkage rod;

[0036] The fourth arm is provided with an elongated hole;

[0037] The elongated hole is arranged close to the first supporting arm;

[0038] The first end of the connecting rod is rotatably connected to the fourth supporting arm through the elongated hole.

[0039] Furthermore, the first sensor also includes a motor;

[0040] The motor is fixedly connected to the first support arm;

[0041] The axial centerline of the power shaft of the motor is perpendicular to the second support arm;

[0042] The second end of the connecting rod is fixedly connected to the power shaft of the motor.

[0043] Furthermore,

[0044] The first sensor also includes a first photosensor, a second photosensor and a third photosensor;

[0045] A plurality of first photosensitive sensors are sequentially arranged on the first side wall;

[0046] A plurality of second photosensitive sensors are sequentially arranged on the second side wall;

[0047] A plurality of third photosensitive sensors are sequentially arranged on the third side wall;

[0048] Each of the first photosensors, each of the second photosensors, and each of the third photosensors are electrically connected to the level transponder.

[0049] Further, the level responder includes a first OR gate, a second OR gate, a third OR gate and an AND gate;

[0050] The first OR gate has a plurality of input terminals, and each input terminal of the first OR gate is electrically connected to one of the first photosensors;

[0051] The second OR gate has a plurality of input terminals, and each input terminal of the second OR gate is electrically connected to one of the second photosensors;

[0052] The third OR gate has a plurality of input terminals, and each input terminal of the third OR gate is electrically connected to one of the third photosensors;

[0053] The AND gate has a plurality of input terminals and an output terminal;

[0054] The output terminal of the first OR gate is electrically connected to an input terminal of the AND gate;

[0055] The output terminal of the second OR gate is electrically connected to the other input terminal of the AND gate;

[0056] The output terminal of the third OR gate is electrically connected to another input terminal of the AND gate;

[0057] The output end of the AND gate is electrically connected to the contactor of the buzzer.

[0058] The present application relates to an electric vehicle entering an elevator monitoring device, which can realize the mirror reflection of the laser by making the surface of the first side wall, the surface of the second side wall, the surface of the third side wall and the surface of the fourth side wall of the elevator car smooth. The first sensor is fixedly connected to the second side wall, and the second side wall is directly opposite to the elevator door of the fourth side wall. When the electric vehicle enters the elevator, since the shape of the electric vehicle is similar to a flat rectangular parallelepiped, the electric vehicle is different from the human body, and the electric vehicle will hinder the reception of the laser emitted by the first sensor itself. The first sensor can give a level transponder signal level according to the different rules of receiving the laser, so as to realize the action level of the level transponder responding to the buzzer. Similarly, the second sensor is fixedly connected to the third side wall, and can also give a level transponder signal level according to the different rules of receiving its own laser. It is worth mentioning that the door lock adjusts the opening and closing of the elevator door. When the door lock obtains the action level, both the first sensor and the second sensor can enter the working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0060] Figure 1 A schematic structural diagram of an electric vehicle elevator entry supervision device provided in one embodiment of the present application at one viewing angle.

[0061] Figure 2 for Figure 1 An embodiment provides a schematic structural diagram of an electric vehicle elevator entry monitoring device from another perspective.

[0062] Figure 3 A schematic diagram of the structure of a first sensor in an electric vehicle elevator entry monitoring device provided in one embodiment of the present application.

[0063] Figure 4 A diagram showing the positional relationship between internal components, people, and electric vehicles of an electric vehicle entering an elevator monitoring device provided in one embodiment of the present application when the device is in use.

[0064] Figure 5 A schematic diagram of the electrical connection relationship between a level transponder, a first photosensor, a second photosensor, a third photosensor and a buzzer of an electric vehicle elevator entry monitoring device provided in one embodiment of the present application.

[0065] Reference numerals:

[0066] 100 - elevator car; 110 - top wall; 120 - bottom wall; 130 - first side wall; 140 - second side wall;

[0067] 150-third side wall; 160-fourth side wall; 170-elevator door; 200-door lock;

[0068] 300-level transponder; 311-first OR gate; 312-second OR gate; 313-third OR gate;

[0069] 314-AND gate; 400-first sensor; 411-first arm; 412-second arm;

[0070] 413-third arm; 414-fourth arm; 421-lamp bead; 422-focusing cover; 423-reflector;

[0071] 424-linking rod; 425-long hole; 426-motor; 431-first photosensor;

[0072] 432 - second photosensor; 433 - third photosensor; 500 - second sensor;

[0073] 600-Buzzer. DETAILED DESCRIPTION

[0074] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0075] The present application provides a device for supervising electric vehicles entering elevators.

[0076] like Figure 1 As shown, in one embodiment of the present application, an electric vehicle elevator entry monitoring device includes an elevator car 100, a door lock 200, a level transponder 300, a first sensor 400, a second sensor 500 and a buzzer 600.

[0077] The elevator car 100 includes a top wall 110 and a bottom wall 120, and a first side wall 130, a second side wall 140, a third side wall 150 and a fourth side wall 160 are fixedly connected between the top wall 110 and the bottom wall 120 in sequence, the first side wall 130 and the third side wall 150 are parallel to each other, the first side wall 130 is perpendicular to the bottom wall 120, the second side wall 140 and the fourth side wall 160 are parallel to each other, the second side wall 140 is perpendicular to the bottom wall 120, and the fourth side wall 160 is provided with an elevator door 170.

[0078] The door lock 200 is rotatably connected to the elevator door 170 .

[0079] The level transponder 300 is electrically connected to the door lock 200 .

[0080] like Figure 2 As shown, the first sensor 400 is electrically connected to the level transponder 300, the first sensor 400 is fixedly connected to the second side wall 140, and the straight-line distance between the first sensor 400 and the bottom wall 120 is within a numerical range of greater than or equal to 60 cm and less than or equal to 80 cm.

[0081] The second sensor 500 is electrically connected to the level transponder 300 , the second sensor 500 is fixedly connected to the third side wall 150 , and the straight-line distance between the second sensor 500 and the bottom wall 120 is within a numerical range of greater than or equal to 60 cm and less than or equal to 80 cm.

[0082] The buzzer 600 is electrically connected to the level responder 300 .

[0083] Specifically, the distance between the first sensor 400 and the bottom wall 120 is greater than or equal to 60 centimeters and less than or equal to 80 centimeters. The distance between the second sensor 500 and the bottom wall 120 is greater than or equal to 60 centimeters and less than or equal to 80 centimeters.

[0084] In actual situations, after the electric vehicle enters the elevator car from the elevator door 170 , the electric vehicle may have two position states, one position state is that the length direction of the electric vehicle is perpendicular to the second side wall 140 , and the other position state is that the length direction of the electric vehicle is perpendicular to the first side wall 130 .

[0085] The second sensor 500 is disposed in a position to cope with the situation that the length direction of the electric vehicle is perpendicular to the second side wall 140. The first sensor 400 is disposed in a position to cope with the situation that the length direction of the electric vehicle is perpendicular to the first side wall 130.

[0086] More specifically, in a spatial plane at a distance greater than or equal to 60 cm and less than or equal to 80 cm from the bottom wall 120 , the length direction of the electric vehicle will block the laser reception of multiple receiving sites of the sensor, which is different from the position state of the human body.

[0087] The present application relates to an electric vehicle entering an elevator monitoring device. The surface of the first side wall 130, the surface of the second side wall 140, the surface of the third side wall 150 and the surface of the fourth side wall 160 of the elevator car 100 are smooth, so that the mirror reflection of the laser can be achieved. The first sensor 400 is fixedly connected to the second side wall 140, and the second side wall 140 is directly opposite to the elevator door 170 of the fourth side wall 160. When the electric vehicle enters the elevator, since the shape of the electric vehicle is similar to a flat rectangular parallelepiped, the electric vehicle is different from the human body, and the electric vehicle will hinder the reception of the laser emitted by the first sensor 400 itself. The first sensor 400 can give the level responder 300 a signal level according to the different rules of receiving the laser, so as to achieve the action level of the level responder 300 responding to the buzzer 600. Similarly, the second sensor 500 is fixedly connected to the third side wall 150, and can also give the level responder 300 a signal level according to the different rules of receiving its own laser. It is worth mentioning that the door lock 200 adjusts the opening and closing of the elevator door 170. When the door lock 200 obtains an action level, the first sensor 400 and the second sensor 500 can both enter a working state.

[0088] like Figure 3 As shown, in one embodiment of the present application, the first sensor 400 has the same structure as the second sensor 500. The first sensor 400 includes a first arm 411 and a second arm 412. The extension line of the first arm 411 is perpendicular to the bottom wall 120. The first arm 411 is fixedly connected to the second side wall 140. The second arm 412 is parallel to the bottom wall 120. The second arm 412 is perpendicular to the first arm 411. The first arm 411 and the second arm 412 are fixedly connected.

[0089] Specifically, the first arm 411 and the second arm 412 constitute a support of the main body of the first sensor 400. The extension line of the first arm 411 is perpendicular to the bottom wall 120, ensuring that the first arm 411 and the second arm 412 are located on a spatial plane with a distance from the bottom wall 120 greater than or equal to 60 cm and less than or equal to 80 cm.

[0090] like Figure 3As shown, in one embodiment of the present application, the first sensor 400 further includes a lamp bead 421 and a condenser 422. The lamp bead 421 is fixedly connected to the middle of the second arm 412. The condenser 422 is fixedly connected to the second arm 412. The lamp bead 421 is disposed between the condenser 422 and the first arm 411.

[0091] Specifically, the condenser 422 gathers the light from the lamp bead 421 to form a parallel light beam. This parallel light beam can achieve the irradiation effect of the laser while reducing the cost of the light source. In actual working conditions, a green light source or a red light source can be used.

[0092] It is worth mentioning that the lamp bead 421 is connected to the middle part of the second arm 412 through a lamp pole. Figure 3 Unnumbered.

[0093] like Figure 3 As shown, in one embodiment of the present application, the condenser 422 is a circular arc piece. The inner surface of the condenser 422 is a part of the hollow spherical shell. The position of the sphere center of the condenser 422 coincides with the position of the lamp bead 421. The inner surface of the condenser 422 is provided with a reflective layer.

[0094] Specifically, the center of the condenser 422 coincides with the lamp bead 421, so that the conversion of non-parallel light to parallel light can be realized. At the same time, the reflective layer of the condenser 422 improves the utilization rate of light.

[0095] like Figure 3 As shown, in one embodiment of the present application, the first sensor 400 further includes a third arm 413 and a fourth arm 414. The third arm 413 is perpendicular to the second arm 412. The third arm 413 is fixedly connected to the second arm 412. The third arm 413 is disposed between the lamp bead 421 and the first arm 411. The fourth arm 414 is perpendicular to the third arm 413. The middle portion of the fourth arm 414 is rotatably connected to the third arm 413.

[0096] Specifically, the third arm 413 is a bracket of the fourth arm 414, and the fourth arm 414 is a bracket of the reflector 423. When the fourth arm 414 rotates relative to the third arm 413, the fourth arm 414 can drive the reflector 423 to rotate.

[0097] In one embodiment of the present application, the first sensor 400 further includes a reflector 423. The reflector 423 is fixedly connected to the fourth arm 414. The reflector 423 is disposed at an end of the fourth arm 414 away from the first arm 411. The reflective surface of the reflector 423 is perpendicular to the fourth arm 414.

[0098] Specifically, the third arm 413 is perpendicular to the second arm 412, the fourth arm 414 is perpendicular to the third arm 413, and the third arm 413 is disposed between the lamp bead 421 and the first arm 411. This allows the reflector 423 to reflect the parallel light of the lamp bead 421. At the same time, the rotation of the reflector 423 enables the parallel light to be scanned in the elevator car 100.

[0099] like Figure 3 As shown, in one embodiment of the present application, the first sensor 400 further includes a linkage rod 424. The fourth arm 414 is provided with an elongated hole 425. The elongated hole 425 is provided close to the first arm 411. The first end of the linkage rod 424 is rotatably connected to the fourth arm 414 through the elongated hole 425.

[0100] Specifically, one end of the linkage rod 424 can slide along the elongated hole 425, ensuring that when the linkage rod 424 performs circular motion, the fourth arm 414 provided with the elongated hole 425 can perform reciprocating motion. In fact, the elongated hole 425 of the fourth arm 414 can provide the linkage rod 424 with telescopic sliding amount.

[0101] In one embodiment of the present application, the first sensor 400 further includes a motor 426. The motor 426 is fixedly connected to the first arm 411. The axial centerline of the power shaft of the motor 426 is perpendicular to the second arm 412. The second end of the linkage rod 424 is fixedly connected to the power shaft of the motor 426.

[0102] Specifically, Figure 4 As shown, the power shaft of the motor 426 drives the linkage rod 424 to rotate. This ensures that when the linkage rod 424 performs a circular motion, the fourth arm 414 provided with the long hole 425 can perform a reciprocating motion. The rotation of the reflector 423 realizes the scanning of parallel light in the elevator car 100.

[0103] like Figure 4 As shown, in one embodiment of the present application, the first sensor 400 further includes a plurality of first photosensitive sensors 431, a plurality of second photosensitive sensors 432, and a plurality of third photosensitive sensors 433. The plurality of first photosensitive sensors 431 are sequentially arranged on the first side wall 130. The plurality of second photosensitive sensors 432 are sequentially arranged on the second side wall 140. The plurality of third photosensitive sensors 433 are sequentially arranged on the third side wall 150. Each of the first photosensitive sensors 431, each of the second photosensitive sensors 432, and each of the third photosensitive sensors 433 are electrically connected to the level responder 300.

[0104] Specifically, the first photosensitive sensor 431, the second photosensitive sensor 432 and the third photosensitive sensor 433 are of the same type, and can be an NPN photosensitive sensor or a PNP photosensitive sensor. When the first photosensitive sensor 431 receives a light source signal, the level responder 300 can determine that there is no obstruction on the light line. When individual sensors among the multiple first photosensitive sensors 431 do not receive a light source signal, it can be determined that the passenger is a person rather than a long electric vehicle. When individual sensors among the multiple consecutively arranged photosensitive sensors among the multiple first photosensitive sensors 431 do not receive a light source signal, it can be determined that the passenger is an electric vehicle.

[0105] The determination process of the second photosensor 432 and the third photosensor 433 is similar.

[0106] like Figure 5 As shown, in one embodiment of the present application, the level responder 300 includes a first OR gate 311, a second OR gate 312, a third OR gate 313 and an AND gate 314. The first OR gate 311 has a plurality of input terminals, and each input terminal of the first OR gate 311 is electrically connected to one of the first light sensitive sensors 431. The second OR gate 312 has a plurality of input terminals, and each input terminal of the second OR gate 312 is electrically connected to one of the second light sensitive sensors 432. The third OR gate 313 has a plurality of input terminals, and each input terminal of the third OR gate 313 is electrically connected to one of the third light sensitive sensors 433. The output terminal of the first OR gate 311 is electrically connected to one input terminal of the AND gate 314. The output terminal of the second OR gate 312 is electrically connected to another input terminal of the AND gate 314. The output terminal of the AND gate 314 is electrically connected to the contactor of the buzzer 600.

[0107] Specifically, the input end of the first OR gate 311 is electrically connected to the first photosensor 431. If the first photosensor 431 is an NPN photosensor, the first photosensor 431 will transmit a high-level signal to the outside when receiving a light source signal. When multiple low-level signals appear, the first OR gate 311 outputs a low-level signal. If the first OR gate 311 outputs a low-level signal, it can be determined that an electric car appears in the elevator.

[0108] Similarly, the second OR gate 312 and the third OR gate 313 are also similar.

[0109] It is worth mentioning that the buzzer 600 will sound only when the first OR gate 311, the second OR gate 312, and the third OR gate 313 output low-level signals at the same time, which greatly reduces the false touch rate when multiple people are riding the elevator.

[0110] The present application relates to an electric vehicle entering an elevator monitoring device. The surface of the first side wall 130, the surface of the second side wall 140, the surface of the third side wall 150 and the surface of the fourth side wall 160 of the elevator car 100 are smooth, so that the mirror reflection of the laser can be achieved. The first sensor 400 is fixedly connected to the second side wall 140, and the second side wall 140 is directly opposite to the elevator door 170 of the fourth side wall 160. When the electric vehicle enters the elevator, since the shape of the electric vehicle is similar to a flat rectangular parallelepiped, the electric vehicle is different from the human body, and the electric vehicle will hinder the reception of the laser emitted by the first sensor 400 itself. The first sensor 400 can give the level responder 300 a signal level according to the different rules of receiving the laser, so as to achieve the action level of the level responder 300 responding to the buzzer 600. Similarly, the second sensor 500 is fixedly connected to the third side wall 150, and can also give the level responder 300 a signal level according to the different rules of receiving its own laser. It is worth mentioning that the door lock 200 adjusts the opening and closing of the elevator door 170. When the door lock 200 obtains an action level, the first sensor 400 and the second sensor 500 can both enter a working state.

[0111] It is worth mentioning that the second sensor has the following positional relationship, i.e., structure, which is not shown in the figure:

[0112] The second sensor includes a fifth arm and a sixth arm. The extension line of the fifth arm is perpendicular to the bottom wall. The fifth arm is fixedly connected to the third side wall. The sixth arm is parallel to the bottom wall. The sixth arm is perpendicular to the fifth arm. The fifth arm is fixedly connected to the sixth arm.

[0113] The second sensor further comprises a lamp bead and a condenser. The lamp bead is fixedly connected to the middle of the sixth arm. The condenser is fixedly connected to the sixth arm. The lamp bead is arranged between the condenser and the fifth arm.

[0114] The second sensor further includes a seventh arm and an eighth arm. The seventh arm is perpendicular to the sixth arm. The seventh arm is fixedly connected to the sixth arm. The seventh arm is arranged between the lamp bead and the fifth arm. The eighth arm is perpendicular to the seventh arm. The middle part of the eighth arm is rotatably connected to the seventh arm.

[0115] The second sensor further comprises a linkage rod. The eighth arm is provided with an elongated hole. The elongated hole is arranged close to the fifth arm. The first end of the linkage rod is rotatably connected to the eighth arm through the elongated hole.

[0116] The second sensor also includes a motor. The motor is fixedly connected to the fifth arm. The axial centerline of the power shaft of the motor is perpendicular to the sixth arm. The second end of the linkage rod is fixedly connected to the power shaft of the motor. The technical features of the above-mentioned embodiments can be combined arbitrarily, and the execution order of each method step is not limited. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The above-mentioned embodiments only express several implementation methods of the present application, and the description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the patent of this application. It should be pointed out that for ordinary technicians in this field, without departing from the concept of this application, several deformations and improvements can be made, which all belong to the protection scope of this application. Therefore, the protection scope of this application shall be based on the attached claims.

Claims

1. An electric vehicle entering an elevator monitoring device, characterized in that: include: An elevator car, comprising a top wall and a bottom wall, wherein a first side wall, a second side wall, a third side wall and a fourth side wall are fixedly connected in sequence between the top wall and the bottom wall, the first side wall and the third side wall are parallel to each other, the first side wall is perpendicular to the bottom wall, the second side wall and the fourth side wall are parallel to each other, the second side wall is perpendicular to the bottom wall, and the fourth side wall is provided with an elevator door; A door lock device, rotatably connected to the elevator door; A level transponder, electrically connected to the door lock; a first sensor, electrically connected to the level transponder, the first sensor being fixedly connected to the second side wall, the straight-line distance between the first sensor and the bottom wall being within a numerical range of greater than or equal to 60 centimeters and less than or equal to 80 centimeters; a second sensor, electrically connected to the level transponder, the second sensor being fixedly connected to the third side wall, the straight-line distance between the second sensor and the bottom wall being within a numerical range of greater than or equal to 60 centimeters and less than or equal to 80 centimeters; A buzzer is electrically connected to the level responder.

2. The electric vehicle elevator monitoring device according to claim 1 is characterized in that: The first sensor has the same structure as the second sensor; The first sensor includes a first arm and a second arm; An extension line of the first arm is perpendicular to the bottom wall; The first support arm is fixedly connected to the second side wall; The second arm is parallel to the bottom wall; The second arm is perpendicular to the first arm; The first support arm is fixedly connected to the second support arm.

3. The electric vehicle elevator entry monitoring device according to claim 2 is characterized in that: The first sensor also includes a lamp bead and a condenser; The lamp bead is fixedly connected to the middle part of the second support arm; The condenser is fixedly connected to the second support arm; The lamp bead is arranged between the condenser and the first supporting arm.

4. The electric vehicle elevator monitoring device according to claim 3 is characterized in that: The condenser is a circular arc piece; The inner surface of the condenser is a part of the hollow spherical shell; The position of the center of the sphere of the condenser coincides with the position of the lamp bead; The inner surface of the condenser is provided with a light reflecting layer.

5. The electric vehicle elevator monitoring device according to claim 4 is characterized in that: The first sensor also includes a third arm and a fourth arm; The third arm and the second arm are perpendicular to each other; The third support arm is fixedly connected to the second support arm; The third arm is disposed between the lamp bead and the first arm; The fourth arm is perpendicular to the third arm; The middle portion of the fourth arm is rotatably connected to the third arm.

6. The electric vehicle elevator monitoring device according to claim 5 is characterized in that: The first sensor also includes a reflector; The reflector is fixedly connected to the fourth arm; The reflector is arranged at an end of the fourth arm away from the first arm; The reflecting surface of the reflecting mirror and the fourth arm are perpendicular to each other.

7. The electric vehicle elevator monitoring device according to claim 6, characterized in that: The first sensor also includes a linkage rod; The fourth arm is provided with an elongated hole; The elongated hole is arranged close to the first supporting arm; The first end of the connecting rod is rotatably connected to the fourth supporting arm through the elongated hole.

8. The electric vehicle elevator entry monitoring device according to claim 7, characterized in that: The first sensor also includes a motor; The motor is fixedly connected to the first support arm; The axial centerline of the power shaft of the motor is perpendicular to the second support arm; The second end of the connecting rod is fixedly connected to the power shaft of the motor.

9. The electric vehicle elevator entry monitoring device according to claim 8, characterized in that: The first sensor further comprises a plurality of first photosensitive sensors, a plurality of second photosensitive sensors and a plurality of third photosensitive sensors; A plurality of first photosensitive sensors are sequentially arranged on the first side wall; A plurality of second photosensitive sensors are sequentially arranged on the second side wall; A plurality of third photosensitive sensors are sequentially arranged on the third side wall; Each of the first photosensors, each of the second photosensors, and each of the third photosensors are electrically connected to the level transponder.

10. The electric vehicle elevator entry monitoring device according to claim 9, characterized in that: The level responder includes a first OR gate, a second OR gate, a third OR gate and an AND gate; The first OR gate has a plurality of input terminals, and each input terminal of the first OR gate is electrically connected to one of the first photosensors; The second OR gate has a plurality of input terminals, and each input terminal of the second OR gate is electrically connected to one of the second photosensors; The third OR gate has a plurality of input terminals, and each input terminal of the third OR gate is electrically connected to one of the third photosensors; The AND gate has a plurality of input terminals and an output terminal; An output terminal of the first OR gate is electrically connected to an input terminal of the AND gate; The output terminal of the second OR gate is electrically connected to the other input terminal of the AND gate; The output terminal of the third OR gate is electrically connected to another input terminal of the AND gate; The output end of the AND gate is electrically connected to the contactor of the buzzer.

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